Track Engineering Insulator Specifications Quiz
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Questions and Answers

What is the maximum distance allowed between consecutive insulators on the same rod?

  • 300 meters (correct)
  • 350 meters
  • 250 meters
  • 200 meters

    • What is the purpose of the insulator provided between the last adjustable crank and the point or lock bar?

  • To prevent rail voltage from passing to rods (correct)
  • To enhance the strength of the rod
  • To eliminate the need for additional rods
  • To simplify the construction of the rod

    • What is the primary consideration when mechanically operating a point?

  • It requires special measures for the protection of operating staff. (correct)
  • It does not need special safety measures.
  • It requires less maintenance than electric operation.
  • It can operate under any environmental conditions.

    • How far must the insulator be from the adjacent rod roller to allow normal movement?

    <p>Adequate clearance</p> Signup and view all the answers

    What is the minimum clearance required between the top of a rod crossing the track and the bottom of the rail?

    <p>40 mm</p> Signup and view all the answers

    What level of AC immunity is required for the point detection circuits?

    <p>AC immunity with specific voltage levels.</p> Signup and view all the answers

    Which element should be insulated from the rail at points operated by rodding?

    <p>All of the above</p> Signup and view all the answers

    What is the maximum permissible length for a point machine with 400 volts AC immunity in a double line arrangement?

    <p>2800 meters.</p> Signup and view all the answers

    What condition must exist regarding the insulated and un-insulated portions of rods?

    <p>They must not come into contact</p> Signup and view all the answers

    What factor of safety is applied when considering the length between point contactors and point motors?

    <p>1.5.</p> Signup and view all the answers

    What should be provided on point rods to protect staff from induced voltage?

    <p>Insulators according to approved instructions.</p> Signup and view all the answers

    If the Engineering department provides the point lever, who shall provide the insulator on the operating rod?

    <p>The Engineering department</p> Signup and view all the answers

    What is the minimum distance that must be maintained between the rod and a steel or C.I sleeper?

    <p>40 mm</p> Signup and view all the answers

    What is the inherent characteristic of a 3 phase point machine regarding induced voltage?

    <p>It is not affected by induced voltage.</p> Signup and view all the answers

    Where should the insulated rod joints be located?

    <p>As close to the cabin as possible.</p> Signup and view all the answers

    What potential issue arises from point rods being in contact with rails?

    <p>They may transmit high rail voltage due to faults.</p> Signup and view all the answers

    What should the Train Controller do upon receiving an advice of a break in the catenary/contact wire?

    <p>Advise all staff responsible for maintenance and operation of signalling equipment.</p> Signup and view all the answers

    Which of the following actions should be taken if an abnormal working of any signalling equipment is noticed?

    <p>Immediately suspend the working of the equipment.</p> Signup and view all the answers

    What is the role of the staff responsible for maintaining the signalling system when notified of a catenary wire break?

    <p>Proceed to the site and test all circuits and equipment.</p> Signup and view all the answers

    What must Engineering officials ensure about the rules for operating the Traction Power Distributions System?

    <p>They must be strictly observed by all staff.</p> Signup and view all the answers

    What certification is required after testing the signalling equipment post-breakage?

    <p>A Certificate from a representative of the Signal Department.</p> Signup and view all the answers

    What should be done if defects in the overhead equipment are likely to damage pantographs or trains?

    <p>Protect the line according to General Rule 3.62.</p> Signup and view all the answers

    What guideline pertains to anti-theft charging in S&T works?

    <p>Guidelines prescribed in Appendix VII of ACTM Vol-II Part II should be followed.</p> Signup and view all the answers

    What is the purpose of traction bonds in electrified areas?

    <p>To ensure reliable electrical circuit continuity and proper earthing.</p> Signup and view all the answers

    Which equipment needs replacement before issuing a certificate for 2.2 KV charging?

    <p>Old DC track relays and DC line relays.</p> Signup and view all the answers

    What is required before commencing work adjacent to any electrical equipment?

    <p>A written authority confirming the equipment is dead and earthed.</p> Signup and view all the answers

    What should staff pay particular attention to when testing after a catenary wire break?

    <p>The external signalling gear for damage.</p> Signup and view all the answers

    Upon confirmation of a catenary wire break, what is the first action of the Train Controller?

    <p>Advise relevant staff as quickly as possible.</p> Signup and view all the answers

    What type of current primarily flows through the rail in a D.C. traction system?

    <p>Return current.</p> Signup and view all the answers

    How many flexible copper bonds are typically provided at each rail joint under the fishplates for D.C. traction?

    <p>Two flexible bonds.</p> Signup and view all the answers

    What should Engineering staff do upon noticing defects in the overhead equipment?

    <p>Immediately report it to the Traction Power Controller.</p> Signup and view all the answers

    What is meant by the term 'live' in the context of electrical equipment?

    <p>The equipment is conducting electricity at all times.</p> Signup and view all the answers

    What is the minimum setting of the mast before a Colour Light Signal without approach signal for a distance up to 80 meters?

    <p>3.25 m</p> Signup and view all the answers

    When a Colour Light Signal with Route Indicators is used, what is the minimum mast height for distances beyond 250 meters?

    <p>2.75 m</p> Signup and view all the answers

    What is the minimum mast height for a Colour Light Signal without Route Indicators for distances beyond 400 meters?

    <p>2.75 m</p> Signup and view all the answers

    For which scenario is a minimum mast height of 3.10 meters required?

    <p>For distances up to 70 m with an approach signal</p> Signup and view all the answers

    What is the minimum setting of the mast for a Colour Light Signal with Horizontal Route Indicators for distances beyond 170 meters?

    <p>3.05 m</p> Signup and view all the answers

    What is the minimum mast setting for a Colour Light Signal without Route Indicators when the distance is beyond 190 meters and up to 270 meters?

    <p>2.90 m</p> Signup and view all the answers

    When setting masts for Colour Light Signals, what mast height is required for distances beyond 310 meters?

    <p>2.75 m</p> Signup and view all the answers

    What minimum mast setting is prescribed for distances up to 240 meters when an approach signal is provided?

    <p>3.25 m</p> Signup and view all the answers

    What should be done when an electric engine is standing on a sanded track?

    <p>Employees should move away from potential contact points.</p> Signup and view all the answers

    How should the permanent way staff respond when a fire is detected near electrified equipment?

    <p>Inform the Station Master promptly.</p> Signup and view all the answers

    What precaution is necessary when unloading rails?

    <p>Ensure Rails do not exceed a combined length of 300 meters.</p> Signup and view all the answers

    Which of the following structures should be bonded and earthed?

    <p>Fencing posts near overhead equipment.</p> Signup and view all the answers

    What is NOT a guideline regarding permanent way tools?

    <p>Insulated tools can be used at any time.</p> Signup and view all the answers

    What distance should permanent way staff maintain from electrically hauled trains?

    <p>250 meters.</p> Signup and view all the answers

    What immediate action should be taken if a person suffers from electric shock?

    <p>Apply First Aid as soon as possible.</p> Signup and view all the answers

    When should a catch siding not be made alive?

    <p>When there are staff present near vehicles.</p> Signup and view all the answers

    What is the minimum distance from any component of a signal post or its fittings to a live conductor?

    <p>700 mm</p> Signup and view all the answers

    Which measures must be undertaken if the required electrical working clearance of 2 meters is not available?

    <p>Provision of a wire mesh screen</p> Signup and view all the answers

    What clearance certification is required concerning anti-theft energisation?

    <p>2.2 KV clearance from DOT</p> Signup and view all the answers

    Who is responsible for ensuring compliance with the checklist prior to charging the OHE at 25 KV?

    <p>Nominated officers</p> Signup and view all the answers

    What type of tools must be supplied to the maintenance staff in electrified areas?

    <p>Insulated tools</p> Signup and view all the answers

    Which document or guideline outlines the requirements for visibility of signals in a RE Area?

    <p>22-A1: Visibility of Signals</p> Signup and view all the answers

    What is the purpose of converting all overhead track crossings to cables?

    <p>To eliminate the risk of overhead wires</p> Signup and view all the answers

    In which annexure is the clearance for signals regarding high-rise Overhead Equipment (OHE) discussed?

    <p>22-A3</p> Signup and view all the answers

    What should be ensured to prevent the potential electrical contact between different rods?

    <p>Insulators must prevent contact between insulated and uninsulated portions.</p> Signup and view all the answers

    What is the primary function of the additional insulator provided between the last adjustable crank and the point or lock bar?

    <p>It prevents the rail voltage from transferring to the rod.</p> Signup and view all the answers

    If two insulators are positioned more than 300 meters apart on a rod, what is required?

    <p>Additional insulators must be installed.</p> Signup and view all the answers

    What must be done to ensure the operational safety of the point, trap indicators, and lock bars when using rodding?

    <p>They need to be electrically isolated from the track.</p> Signup and view all the answers

    What requirement is specified regarding the placement of insulators in relation to rollers and guides?

    <p>All insulators must be situated between the same sets of rollers and guides.</p> Signup and view all the answers

    What is the required minimum distance between the rod and any O.H.E mast?

    <p>40 mm</p> Signup and view all the answers

    When operating points on electrified lines, what insulator requirement is specified?

    <p>Points on electrified lines must have their operating rod insulated.</p> Signup and view all the answers

    What is the minimum clearance distance required between the top of a rod crossing the track and the bottom of the rail?

    <p>40 mm</p> Signup and view all the answers

    What is the maximum permitted height for signals without route indicators above rail level?

    <p>5.2 meters</p> Signup and view all the answers

    What is the required distance that no OHE structures shall be provided in track space behind signals located between tracks?

    <p>600 meters</p> Signup and view all the answers

    If a portal drop arm must be located in the rear of a signal, what design consideration is required?

    <p>The signal must be mounted on an offset bracket.</p> Signup and view all the answers

    What should be checked regarding signal visibility after each phase of O.H.E work?

    <p>Visibility should be checked by the Official in charge both day and night.</p> Signup and view all the answers

    How often should the visibility of signals be checked?

    <p>After each phase of O.H.E work.</p> Signup and view all the answers

    For signals with junction indicators, what precautions must be followed regarding portal drop arms?

    <p>The same precautions as for signals without junction indicators must be followed.</p> Signup and view all the answers

    What is the minimum height for the center line of the red signal above rail level?

    <p>3.65 meters</p> Signup and view all the answers

    What special consideration is required if a portal drop arm is positioned offset from the center line of the track space?

    <p>A special study shall be made regarding its offset positioning.</p> Signup and view all the answers

    What is the minimum height setting for masts before a signal for distances beyond and up to 280 meters?

    <p>2.75 m</p> Signup and view all the answers

    Which guideline is recommended for the placement of signals without route indicators?

    <p>Signals should be at least 600 m away from OHE masts.</p> Signup and view all the answers

    In what situation can the minimum mast setting be reduced for starter signals?

    <p>In special cases as specified.</p> Signup and view all the answers

    What is the maximum height a part of a colour light signal without a route indicator should ideally be?

    <p>5.2 m</p> Signup and view all the answers

    For semaphore signals located outside the track, what is the minimum mast height for the first mast?

    <p>3.05 m</p> Signup and view all the answers

    What should be done with the drop arms of portals near color light signals?

    <p>They should not normally be in the lane where signals are located within 600 m.</p> Signup and view all the answers

    What principle should be applied to colour light signals with route indicators?

    <p>Same as for signals without route indicators.</p> Signup and view all the answers

    What is one consideration when studying special cases for mounting signals?

    <p>The drop arms can be off-set from the signal center line.</p> Signup and view all the answers

    What is the purpose of using mild steel straps or G.I. wire ropes as continuity bonds?

    <p>To ensure a return current path in constrained spaces</p> Signup and view all the answers

    What is a significant risk associated with the failure of structure bonds connecting overhead equipment support to running rails?

    <p>Increased potential difference leading to electric shock hazards</p> Signup and view all the answers

    How are cross bonds beneficial in the context of D.C. traction systems?

    <p>They minimize resistance of the current flow between tracks</p> Signup and view all the answers

    What potential differences can arise from the buildup of return current in rails?

    <p>In multiple scenarios including between insulated joints and earth</p> Signup and view all the answers

    What problem can arise from the removal or tampering of structure bonds?

    <p>Unsafe conditions and possible electric shocks</p> Signup and view all the answers

    Which of the following statements reflects the consequences of inadequate earthing of structures in electrified areas?

    <p>It poses severe electric shock risks to personnel in contact</p> Signup and view all the answers

    What scenario describes the functionality of continuity bonds in rail operations?

    <p>They maintain the integrity of the electrical circuit in return paths</p> Signup and view all the answers

    What is the primary consequence of maintaining disconnection in structure bonds?

    <p>Development of hazardous potential differences</p> Signup and view all the answers

    What is the minimum setting distance for a Colour Light Signal without approach signal for distances beyond 190 meters and up to 270 meters?

    <p>3.20 m</p> Signup and view all the answers

    What action should be taken until a doctor arrives in case of an electric shock incident?

    <p>Continue resuscitation until the person recovers</p> Signup and view all the answers

    Which minimum setting distance applies for Colour Light Signals with Horizontal Route Indicators for distances beyond 125 meters?

    <p>3.55 m</p> Signup and view all the answers

    What must the Engineering Inspector possess regarding the officer-in-charge of each power line?

    <p>Name and address of the officer</p> Signup and view all the answers

    For Colour Light Signals with other than Horizontal Route Indicators, what is the minimum setting distance for distances beyond 280 meters?

    <p>3.05 m</p> Signup and view all the answers

    What is required for Colour Light Signals with Route Indicators for distances up to 60 meters?

    <p>4.02 m setting distance</p> Signup and view all the answers

    What is the minimum setting distance for structures before Colour Light Signals when no approach signal is provided for distances beyond 110 meters?

    <p>3.40 m</p> Signup and view all the answers

    What must the Engineering officials ensure concerning the operational status of power distribution systems?

    <p>Adherence to operating rules</p> Signup and view all the answers

    What is required for the mechanical operation of point to ensure the safety of operating staff?

    <p>Special safety measures</p> Signup and view all the answers

    What does the AC immunity level of a point machine determine?

    <p>The maximum permissible distance between point contactor and point motor</p> Signup and view all the answers

    What must be provided on point rods to protect operating and maintenance staff?

    <p>Insulators</p> Signup and view all the answers

    What is the purpose of providing insulators in the rod joints for RE?

    <p>To protect against high voltage transmission</p> Signup and view all the answers

    How does a 3 phase point machine differ regarding induced voltage?

    <p>It is inherently immune to induced voltage</p> Signup and view all the answers

    In which scenario is the maximum length allowed for a point machine with an AC immunity level of 400 volts in a single line arrangement?

    <p>2200 meters</p> Signup and view all the answers

    What is a crucial factor that contributes to the need for insulation on the rodding in AC electrified areas?

    <p>Induced voltage presence</p> Signup and view all the answers

    What characteristic of point detection circuits must be adhered to for effective operation?

    <p>They must employ ac-immunized relays</p> Signup and view all the answers

    What must be done if tools or equipment could come within 2 meters of live equipment?

    <p>A power block must be taken.</p> Signup and view all the answers

    How should return conductors be treated according to safety guidelines?

    <p>As live conductors.</p> Signup and view all the answers

    What is the recommended distance between a stop signal and a neutral section if the section has a gradient of up to 1 in 300?

    <p>1600 meters.</p> Signup and view all the answers

    What is the purpose of the SSE/JE (Signal) regarding the instructions mentioned?

    <p>To explain the instructions to the staff.</p> Signup and view all the answers

    What minimum height should signals maintain to avoid electrical infringements?

    <p>4 meters.</p> Signup and view all the answers

    Where should the PTFE type short neutral section be located in relation to the stop signal?

    <p>400 m after the stop signal.</p> Signup and view all the answers

    When a neutral section is situated before a stop signal, what should be ensured?

    <p>The train should not cross the signal while coasting.</p> Signup and view all the answers

    What is one of the key objectives for signaling equipment in an AC electrified area?

    <p>To ensure signals operate independently of traction currents</p> Signup and view all the answers

    What action should be taken if modifications required by guidelines are difficult?

    <p>Consult the Chief Electrical Engineer.</p> Signup and view all the answers

    Which factor does NOT affect signaling in an AC electrified area?

    <p>Weather conditions affecting signal visibility</p> Signup and view all the answers

    What must be provided if the clearance of a signal from a live OHE conductor is less than 2 meters?

    <p>Protective shields for signal structures</p> Signup and view all the answers

    How is electrostatic induction primarily mitigated in signaling systems?

    <p>By transferring circuits into underground cables with a metal sheath</p> Signup and view all the answers

    What can develop in conductors parallel to the track due to electromagnetic induction?

    <p>Various currents and voltages</p> Signup and view all the answers

    What is the primary purpose of OHE bonds in an AC electrified area?

    <p>To ensure proper functioning of field S&amp;T equipment</p> Signup and view all the answers

    What must be provided to safeguard staff from electric shock in electrified areas?

    <p>Protective measures and clear signage</p> Signup and view all the answers

    What is a primary consideration when designing the layout plan for OHE?

    <p>Visibility and electrical clearances of signals</p> Signup and view all the answers

    What is the minimum setting of masts before a signal for distances beyond and up to 130m?

    <p>3.25 m</p> Signup and view all the answers

    What should be avoided in the lane where signals are located for a distance of at least 600 m before the signal?

    <p>Drop arms of portals</p> Signup and view all the answers

    What is the maximum height above rail level for a colour light signal without a route indicator?

    <p>5.2 m</p> Signup and view all the answers

    For semaphore signals located outside the track, what is the minimum setting height for the first mast?

    <p>3.05 m</p> Signup and view all the answers

    What should be done if a signal cannot be located 600 m before due to other infrastructure?

    <p>Use off-set mounting for the signal</p> Signup and view all the answers

    What factor should be considered when locating colour light signals with route indicators?

    <p>Minimum clearances from conductors</p> Signup and view all the answers

    What is the minimum setting height of the mast for the next three masts for semaphore signals?

    <p>2.75 m</p> Signup and view all the answers

    What special consideration should be taken for the drop arms before a signal?

    <p>They must be offset opposite the signal</p> Signup and view all the answers

    What is the minimum distance that must be maintained from any component of a signal post or its fittings to a live conductor?

    <p>700 mm</p> Signup and view all the answers

    Which provision is required if the requisite electrical working clearance of 2 meters is not available?

    <p>Use of wire mesh screen</p> Signup and view all the answers

    What certification is necessary regarding anti-theft energisation?

    <p>A certificate of clearance from DOT for 2.2 KV anti-theft energisation</p> Signup and view all the answers

    Who issues the approved checklist of works to be completed as per the provisions outlined?

    <p>Principal Chief Signal and Telecom Engineer</p> Signup and view all the answers

    What should be done to the overhead track crossings of BSNL and Railway?

    <p>Convert to cables and remove overhead wires</p> Signup and view all the answers

    What must be ensured by the nominated officers before the OHE is charged at 25 KV?

    <p>Compliance with the issued checklist</p> Signup and view all the answers

    Which of the following annexures contains descriptions related to visibility of signals?

    <p>22-A1</p> Signup and view all the answers

    Which diagram is referenced for signal clearance for curved tracks with 60 to 140 S.E.?

    <p>22-D2</p> Signup and view all the answers

    What is the purpose of cross bonds in track systems?

    <p>To reduce the resistance of the current to a minimum</p> Signup and view all the answers

    What is a potential risk associated with the absence of continuity bonds?

    <p>Unsafe working conditions leading to potential damage at rail ends</p> Signup and view all the answers

    What type of materials are used for structure bonds to ensure good earthing?

    <p>Mild steel straps or G.I. wire ropes</p> Signup and view all the answers

    What happens if insulators fail or current leaks from structures supporting overhead equipment?

    <p>Supply is switched off to prevent electric shock</p> Signup and view all the answers

    What is the consequence of tampering with structure bonds?

    <p>Unsafe conditions potentially causing electric shock</p> Signup and view all the answers

    Why is it necessary to bond structures such as foot-over bridges and sheds near overhead equipment lines?

    <p>To prevent any current buildup in the structures</p> Signup and view all the answers

    What can result from a build-up of potential due to return current in rails?

    <p>Risk of electric shock due to potential difference</p> Signup and view all the answers

    What is the main reason for connecting structure bonds to running rails?

    <p>To ensure good earthing for safety</p> Signup and view all the answers

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